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c1189caeaf
The submodule code recently grew generic code to build a
dynamic argv array. Many other parts of the code can reuse
this, too, so let's make it generically available.
There are two enhancements not found in the original code:
1. We now handle the NULL-termination invariant properly,
even when no strings have been pushed (before, you
could have an empty, NULL argv). This was not a problem
for the submodule code, which always pushed at least
one argument, but was not sufficiently safe for
generic code.
2. There is a formatted variant of the "push" function.
This is a convenience function which was not needed by
the submodule code, but will make it easier to port
other users to the new code.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
20 lines
463 B
C
20 lines
463 B
C
#ifndef ARGV_ARRAY_H
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#define ARGV_ARRAY_H
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extern const char **empty_argv;
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struct argv_array {
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const char **argv;
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int argc;
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int alloc;
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};
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#define ARGV_ARRAY_INIT { empty_argv, 0, 0 }
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void argv_array_init(struct argv_array *);
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void argv_array_push(struct argv_array *, const char *);
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__attribute__((format (printf,2,3)))
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void argv_array_pushf(struct argv_array *, const char *fmt, ...);
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void argv_array_clear(struct argv_array *);
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#endif /* ARGV_ARRAY_H */
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